The best time to visit Arth is during the summer months, from June to September, for pleasant weather and full access to outdoor activities.During this period, temperatures are mild, typically ranging from the mid-60s to low 70s Fahrenheit (18-23°C), making it ideal for hiking, boating on Lake Zug, and exploring the natural beauty of the region. The days are also longer, providing more daylight hours for sightseeing and recreation. Many local attractions, such as the Arth-Goldau Animal Park and the Rigi mountain railways, operate on extended schedules during these months.For travelers who enjoy winter sports and a snowy landscape, December to March offers opportunities for skiing, snowboarding, and snowshoeing in the nearby mountains. While colder, the winter season provides a different kind of beauty, with festive markets in surrounding towns and cozy experiences. However, some lake activities and hiking trails may be less accessible.